– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 pm Wed 14 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Wed 14 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryModerate rain (total 11mm), heaviest on Sat morning. Warm (max 21°C on Thu afternoon, min 9°C on Sat morning). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 7mm), mostly falling on Mon night. Very mild (max 11°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light. | ||||||||||||||||
Wed 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | |  | | | | |  |  | |  | | |
rain shwrs | clear | clear | clear | clear | some clouds | clear | rain shwrs | rain shwrs | rain shwrs | clear | some clouds | cloudy | cloudy | cloudy | light rain | rain shwrs | |
Cloud base (m) | 950 | 9400 | 8300 | 2000 | 650 | 1650 | 6500 | 5150 | 4250 | 2750 | 800 | 600 | |||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | — | — | — | — | — | — | 4 | 6 | 0.5 | — | — | — | — | — | 2 | 5 |
max °C | 15 | 12 | 19 | 21 | 16 | 20 | 21 | 15 | 10 | 10 | 7 | 10 | 11 | 10 | 9 | 8 | 6 |
min °C | 15 | 12 | 12 | 20 | 15 | 16 | 18 | 11 | 9 | 10 | 6 | 6 | 11 | 8 | 7 | 7 | 6 |
chill °C | 15 | 12 | 12 | 20 | 15 | 16 | 18 | 10 | 8 | 9 | 6 | 6 | 11 | 8 | 7 | 7 | 6 |
Freezing level m | 3600 | 3850 | 3950 | 3900 | 3850 | 3750 | 3550 | 2800 | 1800 | 1800 | 1850 | 2400 | 2400 | 2150 | 1700 | 1550 | 1500 |
 | — | — | 7:26 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:33 | — | — |
 | 6:21 | — | — | 6:19 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:10 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Moderate rain (total 11mm), heaviest on Sat morning. Warm (max 21°C on Thu afternoon, min 9°C on Sat morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 7mm), mostly falling on Mon night. Very mild (max 11°C on Sun afternoon, min 6°C on Sat night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.